Gods are Gods and temples are their homes...
Voadam said:
Sigil,
I like that a lot,
It doesn't address the whole are they a source of clerical divine power question, but I like the ideas of planar control and the political maneuvering it engenders.
I deliberately ducked that question, because the question (in my mind) arises,
"Where does the ability to grant clerical divine power come from?"
Answer: It comes from the deity a cleric worships.
Question: Where does the power of a deity come from?
Answer: It comes from the worshipers of a deity?
It seems to me that the logical conclusion of all of this is that a cleric ultimately gains his powers from himself (and other members of his flock), with the deity acting as a "focus" for that energy derived from the faith of the followers.
IOW, in canonical D&D, faith is a VERY real power.
Therefore, it stands to reason that if a cleric worships a demon, the demon similarly acts as a focus for the energy derived from the faith of the cleric and others like him.
I'm not sure I'm entirely comfortable with this. The entire thing stems from the Time of Troubles in the Forgotten Realms. And to be honest, I'm not comfortable with this because it implies that, ultimately, a cleric is the source of his OWN power. Not a deity. It also makes the goal of a deity rather simplistic, good or evil, lawful or chaotic - the goal is to proselyte for the selfish reason that the deity will gain more power.
This is going counter to 3e canon, but I am going to propose something more along the lines of the Immortals rules... that divinity is something innate to the deity itself, that the deity's power is *not* derived from followers.
Furthermore, there is a reason that deities do not continously fight in the Prime, trying to take it over, and that reason is fairly simple... the reason is the "battle for souls" and the balance that exists in the Prime.
This is going to get quite philosophical here, but please bear with me...
The multiverse of D&D may be said to be shaped by "free will" rather than by elemental forces of good and evil. (I will get back to this in a moment)
The prime material plane is rather unique in that the inhabitants of the prime, by and large, are virile. They are creatures with free-willed souls (as alluded to in raise dead and other spells), and have the capacity to "create" new souls through the process of conception and birth (when a "soul" enters the body thusly created is neither here nor there - let's not turn this into a real-world morals and ethics discussion). A body on the prime material plane is made of equal portions of light/dark, good/evil, water/earth, positive/negative energy, and so on. IOW, all of the elements and energies of the universe are present in balanced proportions. Perhaps this balance is what engenders fertility of the body.
Native inhabitants of the outer planes are, by contrast, semi-sterile... though they can "piggyback" the virility of creatures native to the prime plane (thus resulting in births of half-fiends, half-celestials, et al), demons do not breed with demons. Solars do not breed with solars.
From the SRD:
Outsider: An outsider is a nonelemental creature that comes from another dimension, reality, or plane. Unless noted otherwise, outsiders have darkvision with a range of 60 feet.
A slain outsider cannot be raised or resurrected, although a wish or miracle spell can restore it to life.
BTW, Elementals are treated similarly... though we rarely think of someone's soul making its way to the elemental planes following death, it is feasible, I suppose.
Given this, creatures truly native to the outer planes can be thought of in one of two ways...
A.) They lack "souls" in the truest sense of the word. They are physical manifestations of pure goodness/evil/law/chaos and nothing more. This makes sense, since they cannot be raised - there is no soul to put back into the slain body. Since they do not have souls, they are incapable of creating new souls (having offspring).
This, however, contradicts the "canon" that souls go to the outer planes and become "petitioners" (or whatever the term is from MotP). This tells me that option A is better-suited for thinking of elementals - they are sentient, physical manifestations of the power of pure element, but are literally soulless creatures (this also explains why most of them tend towards neutrality).
B.) The "outsider" is merely a physical manifestation taken on by a soul that has already exercised its free will (its choices during its "life" on the prime material plane having determined the destination plane at which it arrived). However, this is not the "real" body of the soul but rather a surrogate body, hence a raise dead doesn't work. This requires the belief that one's native/original body and soul are somehow tied together. One of the consequences of using the material of the outer planes to so encase one's soul is the lack of fertility because there is no balance... if I go to Hell, where will I find good "matter" to balance the evil "matter" I am using to create my body in order to give me fertility? I can't - because by definition no such matter exists in Hell!
This seems to me to make a little more sense. It also reinforces the importance of "free will" and explains the battle for souls while refraining from physical battle on the Prime... since evil (and good) cannot increase its numbers on its own (remember, no children), it MUST allow the prime to continue to exist in order to swell its ranks. Because each fiend or celestial is a soul that has taken on physical form using outer planes matter, it is important to both sides to keep "bringing in souls."
Free will becomes all-important... all creatures born into the prime are potential demons or celestials... and this is the sole source of new recruits because the Prime is the sole source of new souls! You can't get more celestials without creatures being born into the Prime plane and choosing to do good. You can't get more devils and demons without creatures being born into the Prime plane and choosing to do evil.
Prime creatures are born in "balance" - it is their own choices that polarize them towards good or evil. However, half-fiends and half-celestials (and other "tainted" creatures) are born "out of balance" - which explains the tendency of half-fiends towards evil (and half-celestials toward good - they are literally physically pre-disposed that way). And only souls in physical "balance" can create new souls (they are fertile). (This means that two half-celestials could not have offspring).
Since choices on the good/evil and law/chaos spheres are FAR more abundant than choices on the earth/air or fire/water spheres, much greater polarization occurs on these axes (and hence you don't see souls going to the elemental planes, though in theory it COULD happen - perhaps the reason there are so few powers on the elemental planes is that there are only a few souls that have made it to the elemental planes, eh?).
Thus, demons and devils never wish to DESTROY the entire Prime, only to CONTROL it, for they know that if they were to destroy the Prime, the influx of souls (which later evolve into devils/demons) would stop. It also explains why gods and celestials and fiends don't just take their war into the prime - it would knock the prime out of balance.
Now let's step back, take a breath, and review. Haven't yet touched on the role of gods, but am getting there.
1.) Only natives of the Prime Material Plane (okay, any Prime Plane) are "balanced." "Balanced" is defined as being made of equal amounts of elemental/good/evil/positive/negative material.
2.) Only creatures "in balance" can have offspring with "souls."
3.) Creatures' souls are polarized toward good/evil/law/chaos based on their choices.
4.) When a creature's soul leaves its body in death, it moves to the outer plane towards which it has been polarized by its choices in life.
5.) Once the soul reaches this outer plane, it is able to use the material of that plane to create a physical form.
6.) Because the material that exists on outer planes are out of balance by definition, souls that take form on those planes are out of balance and therefore infertile.
7.) Therefore, the only place for "recruiting" future devils/demons/celestials is the Prime Material Plane. The balance of the Prime must be protected (even demons and devils respect this) and therefore wars among outer planar factions are kept on the outer planes.
Now, to add to this discussion from my last one, I will add the following points...
8.) Creatures of great willpower and personal force can impose their will on a plane and draw power from that plane. The power comes from the raw energy of good/law/chaos/evil itself.
9.) By harnessing that power, creatures may gain semi-divinity, gaining divine powers on their own plane. They are able to focus the goodness/evil/law/chaos through their own material forms (much as spellcasters learn to channel magic, though on a much greater scale). These creatures are loathe to travel from the realms where they are semi-divine, as they lose their powers quickly in unfamiliar planar environments.
Now, here is where the gods come in...
10.) Some creatures gain such mastery of this power that they are able to actually incorporate this energy into their material forms. They are no longer dependent upon a particular plane over which they can impose their will for energy, as they have literally internalized the energy and made the energy part of themselves. These creatures usually take up residence in areas where similar planar energy is around on general principles (after all, why would a god of goodness and light want to live in a realm of evil and darkness), but because the energy is literally part of them, they are able to travel to other planes with no loss of efficacy. These are the beings commonly referred to as "gods" because of their universality - they can manifest themselves *anywhere* with no loss of efficacy (as compared to a semi-divine being who can only manifest himself in certain places with full efficacy).
And finally, we answer the question of "where do clerics get their powers from?"
Answer: Clerics gain their power from these creatures' investiture of power in the cleric. As part of the process in which they learn to internalize the raw energy of the universe, gods learn to invest that energy anywhere. They reward clerics with an investiture (spells, domain powers, etc.) in order to encourage the clerics to become more like them and to encourage others to follow in the cleric's footsteps.
OPTIONAL Additional Answer: If you wish, you may rule that some portion (from none to all) of semi-divine powers of the planes have gained a level of mastery that allows them to impart powers to their followers... though probably only through proper rituals that allow a focus to be created through the planes.
The classic example for evil is a ritual sacrifice... since souls move across the planes at the time of death, the sacrifice and associated death creates a little bit of a "hole" between planes and the evil associated with the ritual sacrifice creates a focus - hence, a cleric devoted to a demon might have to use a sacrifice so the demon can "locate him" and tie into his location in order to grant him power - this serves the double purpose of allowing the demon to locate the cleric AND polzarize the cleric more fully to evil. Sacrifice might not be optional for investiture of power, but *required*, not only on the part of the cleric wishing to gain power, but the demon wishing to GRANT the power.
I will admit that an analogous example for a "good" focus is a little more difficult to come by... perhaps prayer and sacrifice of wealth or goods or a vow of faithful service?
The reason this is listed as optional is that it allows individual DMs to grant (or not grant) demons, devils, celestials, et al the ability to grant spells and powers to clerical followers on an individual basis!

Orcus and Demogorgon and Asmodeus might be semi-divine powers that have mastered the technique of granting spells without a focus (such as sacrifice), but Moloch and Juiblex might only be good enough to grant spells with that focus, while Tiamat and Pazuzu might not know how to grant spells at all. You literally can make rulings on a case-by-case basis.

You could even rule that Yan-C-Bin (Elemental Prince of Evil) knows how to grant spells.
There. All done. Your mileage may vary, but this is how I would suggest handling it in a way that, to me, allows for great flexibility and at the same time has an underlying logic behind it (even if it isn't strictly canonical in that deities no longer rely on worshipers directly for their power - a deity does rely on his worshipers directly for building his "army" of followers in the outer planes, though).
--The Sigil